diff options
Diffstat (limited to 'drivers/gpu/drm/drm_print.c')
| -rw-r--r-- | drivers/gpu/drm/drm_print.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 08cfea04e22b..ded9461df5f2 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -25,6 +25,7 @@ #include <linux/debugfs.h> #include <linux/dynamic_debug.h> +#include <linux/export.h> #include <linux/io.h> #include <linux/moduleparam.h> #include <linux/seq_file.h> @@ -390,3 +391,26 @@ void drm_print_regset32(struct drm_printer *p, struct debugfs_regset32 *regset) } } EXPORT_SYMBOL(drm_print_regset32); + +/** + * drm_print_hex_dump - print a hex dump to a &drm_printer stream + * @p: The &drm_printer + * @prefix: Prefix for each line, may be NULL for no prefix + * @buf: Buffer to dump + * @len: Length of buffer + * + * Print hex dump to &drm_printer, with 16 space-separated hex bytes per line, + * optionally with a prefix on each line. No separator is added after prefix. + */ +void drm_print_hex_dump(struct drm_printer *p, const char *prefix, + const u8 *buf, size_t len) +{ + int i; + + for (i = 0; i < len; i += 16) { + int bytes_per_line = min(16, len - i); + + drm_printf(p, "%s%*ph\n", prefix ?: "", bytes_per_line, buf + i); + } +} +EXPORT_SYMBOL(drm_print_hex_dump); |